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The Ex Vivo Time of Fresh Autologous Cartilage Before Transplantation and Cartilage Absorption Degree

Fan, Qing-Chun, MD*; Tian, Hua; Wang, Xu-Kai, MD

doi: 10.1097/SCS.0000000000004840
Original Articles

Objective: This study aims to determine the relationship between the time of autogenous cartilage in vitro and the degree of absorption in animal experiments.

Methods: New Zealand white rabbits were randomly divided into 3 groups according to the time of cartilage in vitro: 1-hour group, 2-hour group, and 3-hour group. A volume of ear cartilage was taken and transplanted into the back, according to the group. After 1 month, the volume was taken out and remeasured. Then, these were compared by scanning electron microscopy and hematoxylin and eosin staining.

Results: The cartilage bulk absorption level of different groups is different (P < 0.05). There was statistical significance when the 3-hour group was compared with the other 2 groups (P < 0.05). This shows that cartilage volume absorption level becomes higher after 3 hours. Scanning electron microscopy revealed that before and after transplantation, the arrangement of collagen fibers and the gap between these fibers changed. Hematoxylin and eosin staining revealed that there were some morphological changes in chondrocytes, and the degree of chondrocyte apoptosis increased with time, which was accompanied by granulation tissue formation. In addition, the cartilage tissue survived after transplantation.

Conclusion: The change in cartilage volume was more obvious after 3 hours of autogenous fresh cartilage transplantation, when compared with that of the first 2 hours. The longer the time of light microscopy was, the longer the apoptosis of cartilage cells, the more serious the destruction of collagen fibers and the cartilage matrix, and the greater the absorption of cartilage and the new chondrocytes.

*Oral and Maxillofacial Surgery, Liaocheng People's Hospital

Eight Departments of Neurology, The Third People's Hospital of Liaocheng City, Liaocheng

Dentofacial and Plastic Surgery, Stomatology College, Shenyang, China.

Address correspondence and reprint requests to Xu-Kai Wang, MD, Dentofacial and Plastic Surgery, Hospital of Stomatology of China Medical University, No. 117, north Nanjing street, Heping district, Shenyang 110001, China; E-mail:

Received 8 May, 2018

Accepted 16 June, 2018

The authors report no conflicts of interest.

© 2018 by Mutaz B. Habal, MD.